Waste-heat radiator



J. E. NUTE.

WASTE HEAT RADIATOR.

APPLICATION FILED FEB. 16. 1917.

1,328,540, Patented Jan. 20, 1920.

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UNITED STATES JAMES E. NUTE, OF POlMJLl-XND, MAINE.

WASTE-HEAT RADIATOR.

Specification of Letters Patent.

Patented Jan. 20, 1920.

Application filed February 16, 1917. Serial No. 149,139.

To all whom it may concern:

Be it known that I, JAMES E. NUTn, a

citizen of the United States, residing at Portland, in the county of Cumberland and State of Maine, have invented certain new and useful Improvements in Waste-Heat Radiators, of which the following is a specification.

This invention relates to improvements in waste heat radiators adapted to conserve and utilize the heat which passes out of the heater through the funnel and chimney. And it relates particularly to an improved apparatus adapted to be incorporated in the funnel between the heater and the chimney.

In the drawings herewith accompanying and forming a part of this application Figure 1 is a vertical sectional view partly in elevation of my improved apparatus; Fig. 2 is a horizontal sectional view taken on line w00, Fig. 1; Figs. 3 and 4 are detail views of the plates on the radiator and air chamber respectively, and Fig. 5 is a detail view of the locking rod.

The same reference characters indicate like parts in the several figures.

It is well-known that in ordinary heaters a large portion of the heat developed is carried by the drafts through the funnel and escapes up the chimney. Hitherto various attempts have been made to prevent the waste, but so far as applicant is aware the apparatus used has been objectionable for various reasons, among which may be mentioned serious obstruction to the draft and consequent checking of combustion and difliculty in cleaning the apparatus of prodnets of combustion which tend to collect in and upon the interior of the radiator, and it is the object of the present invention, among others, to overcome these objections.

In said drawings 1 is a heater, 2 a chimney, 3 a funnel leading from the heater to the chimney. The heater and funnel are usually located in the basement below the floor 4. Above the floor is placed a radiator drum 5 in the bottom of which are two openings 6 adapted to receive intake pipe 7 and exit pipe 7 which are joined to collars 8 on the funnel, one on each side of a partition 9, which partition is preferably constructed in the form of a damper which may be opened to permit a direct draft from the heater to the chimney if desired. Preferably the openings 6 may be surrounded by collars 10 through which the pipes 7 and 7 project. The radiator drum is provided with an opening 11 in the top and an opening 12 in the bottom. Removably positioned in said openings and adapted to make tight joints with the top and bottom of the ra diator drum is an air chamber 13 open to the air at the top and bottom and having its external surface within the radiator exposed to the heated air and products of combustion from the heater. I have shown what seems at present to be the better form and arrangement of this feature of my invention. As shown, the opening in the bottom of the radiator is surrounded by an up: wardly extending flange or collar let which forconvenience in positioning the bottom of the air chamber is slightly contracted at the top The air chamber preferably tapers downwardly especially the side 15 adjacent the intake opening 7 to the radiator, thus projecting over the opening and so being exposed to the direct current of rising air. The top of the radiator may be provided with a removable perforated cap 16. It is understood that the air chamber is to have a smoke tight and air tight contact top and bottom with the radiator. The air chamber may be secured in the radiator by any convenient means. I have illustrated a simple handy device for this purpose. Across the opening in the bottom of the radiator is a plate 16 having transverse slits 17 and 17 therein, one longer than the other, and across the open upper end of the air chamber is a plate 18 having a slit 19 therein. A rod 20 has on one end an enlargement 21 adapted to pass through slits 17 and 19 and when turned half-around to be locked in slit 17 against removal. The rod has a threaded end which is adapted to project through the slit in plate 18 and to receive a nut 22, the turning down of which firmly presses the air chamber down into the radiator and holds it in place.

The operation of my improved apparatus is as follows: The heated air, gases and other products of combustion pass through the funnel through the intake 7 to the interior of the radiator, circulate around the exterior surface of the air chamber, thence pass through the exit 7* into the funnel again on the other side of the partition and thence pass into the chimney. The radiator will take up a portion of the heat which will be radiated from the external surface thereof. At the same time the air chamber will become heated and will heat the air contained therein which will rise and establish a circulation of warm air in the room. The bottom of the air chamber may terminate in the room or in the open air if desired, thus supplying perfectly fresh air. hen it is desired to clean the apparatus the air chamber may be readily removed out through the top of the radiator without removing any other part of the radiator except the perforated cap, thus affording con venient access to all parts of the interior of the radiator and to the exterior surface of the air chamber.

I claim:

1. In a device of the cha 'acter described, the combination with a heater and smoke funnel having a partition therein, of an air tight radiator having intake and exit openings in the bottom thereof connected with said funnel, one on each side of said partition, a removable air chamber mounted in said radiator between said openings and open at the top and bottom and means for locking the air chamber to the radiator.

2. In a device of the character described, the combination with a heater and smoke funnel having a partition therein, of an air tight radiator having intake and exit openings in the bottom thereof connected with said funnel, one on each side of said partition, and openings in the top and bottom, the opening in the bottom being between said intake and exit pipes, an upwardly extending flange surrounding the opening in thebottom of the radiator and a removable air chamber between said openings open at the top and bottom and adapted to make a tight joint with the radiator at the top and bottom.

3. In a device of the character described, the combination with a heater and smoke funnel having a partition therein, of an air tight radiator having intake and exit openings in the bottom thereof connected with said funnel, one on each side of said partition, and openings in the top and bottom, the opening in the bottom being between said intake and exit pipes, an upwardly extending inwardly tapering flange surrounding the opening in the bottom of the radiator and a removable air chamber between said openings open at the top and bottom and adapted to make a tight joint with the radiator at the top and bottom.

In testimony whereof I'affix my signature.

JAMES E. NUTE. 

